WAY out of the way: You could take 81 all the way to 66 then to 17 into Fredericksburg area.
Less out of the way: 15 through Point of Rocks into VA and continue to 17
270 / 495 / I95 would be most direct but more traffic.
G-half can always find a way to do things upside-down, inside-out or backward.
It's his Super Power!